Device for guiding, clearing, and tensioning yarn



7 3,4622% J. o. MCKEAN DEVICE FOR GUIDING, CLEARING, AND TENSIONING YARN Original Filed June 9, 1921 Ey l.

Patentedluly 17, 1923.

UMEEE stares JOHN O. MOKEAN, OF WESTFI'ELD, MASSACHUSETTS, ASSIGNOB TO FOSTER MACHINE COMPANY, OF WESTFIELD, MASSACHUSETTSA CORPORATION OF MASSACHUSETTS.

DEVICE FOB GUIDING, CLEARING, AND TENSIONING- YABN.

Application filed June 9, 1921, Serial No. 476,264. Renewed June 14, 1923.

To all whom 2'25 may concern: v

Be it known that 1, JOHN O. MoKEAN, a citizen of the United States, and resident of Westfield, in the county of Hampden and State of Massachusetts, have invented a new and useful Improvement in Devices for Guiding, Clearing, and Tensioning Yarn, of whichthe following is a specification.

The object of my invention is to provide certain improvements in the construction, form and arrangement of the several parts of, a device forguiding, clearing and tensioning yarn, whereby the life of the device is materially lengthened; in which the parts which are Subject to wear maybe readily replaced; in which the rotation of the gravity operated disc by the yarn is assured; and in which the removable skeleton yarn support may be adjusted to different positions.

This invention relates more particularly to improvements in the device covered by my application filed April 12, 1921, Serial N 460636. v I q a 'A practical embodiment of my invention is represented in the accompanying drawin s,in which,

1g. 1 represents the device in top plan.

Fig. 2 represents the same in side elevation.

Fig. 3 represents thedevice in bottom plan.

Fig. 4 represents the same in front elevation.

Fig. 5 rep-resents the device in rear elevation.

6 represents a section taken the plane of the line Vl'.-VI of Fig. 1, looking in thedirectionof the arrows.

The bracket is preferably a casting which comprises an integral resilient yoke, the lower and upper branches of whi'chare denoted by 1 and 2. These branches are provided with lateral extensions 3 and 4 respectively, forming between them a slit 5 for the passage of theyarn.

The lateral extension 3 may be provided with a downwardly extended ear 6.

The upper branch 2 is sprung out of its normal position to vary the width of the slit 5 without changing the parallelism of its walls, by means of an adjusting screw, the shank 10 of which passes through the upper branch 2 across the yoke and into screwthreaded engagement with the lower branch 1, the head 11 of which screw is preferably countersunk in a recess 12 in the upper branch 2. As the device is shown, the screw is arranged to spring the upper branch 2 toward the lower branch 1 of the yoke to narrow the yarn slit 5, the resiliency of'the yoke serving to spring the branches apart'to widen the slit as the screw is turned back.

The parts hereinabove described serve to act as a very effective and simple yarn clearer or'slub catcher, which may bereadily adjusted to the minutest degree for different sizes of yarn and then will en age bunches slubs, knots or other enlarged portions o the yarn for clearing the same. 1 i

The bracket maybe supported in any suitable manner on the bar 13 of the machine, as for instance by providing the lower branch of the yoke with a hollow lug 14,

through which the bar 13 extends; a set screw 15 being provided for securing the bracket on the bar. i

. An arm 16 projects laterally from the lower branch 1 of the yoke, from which arm projects rearwardly a finger 17 having ahookedend 18 which serves as a guideand'keeper for the yarn as it enters the device. The arm 16 is provided with a depressed portion 19 between the yoke and finger, over which depressed portion the yarn leads to the tension device to be immediately'described.

The gravity tension device for the yarn is constructed and arranged as follows 5-- A guard portion 21 extends rearwardly from the lateral extension 4of the upper branch 2 of the bracket. 'The upper branch is also provided with an overhanging portion 23 forming a bridge leading frorn'the' rear end of the guard 21 to the front of the said upper branch. r

A split pin extends through the overhanging portion 23' and projects downwardly therefrom to a point below the yarn support to be hereinafter described, which. is frictionally held in its position so that it may be removed from the overhanging portion when so desired. In the present instance I have shown this pin as a cotter pin, the branches of which are denoted by 24, 25 and the laterally turned head of which is denoted by 26. This laterally turned head end of the pin serves as a convenient handle for manipulating the pin. The bending of the head end of the pin also ensures the keeping of the branches 24, 25 of the pin together when the pin is inserted into its operative position, and does not permit. the

spreading of the bra n'ches'as is the tendency where the head end of the pin is not turned laterally.

.The overhanging portion 23'is provided with an. uprising guard27 for preventing r the yarn from being caught on the head 26 Y of the. pin, it being'understood thatthe head of the split pin may be swung laterally into a position in frontof the guard for more completely protecting the head of the pin from engagement by the yarn.

,QThe' removable skeleton yarn support which. forms apart ofthe tension device fortheyarn comprises a substantiallyU- shaped grid, the branches of which are denoted by'29, 30, and the downwardly inclinedlclosed end of which is denoted by 28. These branches are inserted into holes through the lower branchofthe yoke and the's'keleton support or grid projects laterally from the said lower, branchv of the yoke to a point considerablybeyond. the guard 21,, a space 22 being left between the top of the skeleton support and: the bottom of the said guard for permitting the introduction'ofthe yam when threading the.

same. These branches 29and 30 of the skeleton support are located in a substantially horizontal plane upon opposite. sides of the depending split pin and the skeleton support may be adjusted longitudinallyto different positions, a set screw .31 carried by the lower branch, of the yoke being arranged in position to engage one of the branches, to

. v is provided'with an auxiliary arranged depending hollow lug 33 which projects below i the top ofthe skeleton yarn support, in the present instance between the branches of the same, inposition to befrictionally engaged by the yarn as it passes between the weighted disc and the yarn support, whereby the disc is rotated, thus providing aneven wear on the bottom of the said disc. i

It willbe seen that as theskeletonnyarn support becomes unduly worn at any one point, the screw 31 maybe released and the yarn support moved longitudinally to a slight degree-and then again clamped in its new adjusted position. By this longitudinal adjustment of the yarn support 1am en-' abled. to materially lengthen the life of the support. l/Vhen all of the surfaces'ofthe yarn support between-its limits ofya'djustment become worn, the 'y'arnjsupport may i be removed and it may be replaced by a newf'y'a'rn support.

vThe partsshownand described, butfnot claimed herein which relate more particularly to the construction of the yarn clearer or slub catcher form the subject matter of a 'copendingapplication filed'by me on Septemb'er 16, 1920, Serial No. 4106-37.

It is evident that various-changes may be made 1n the construction, form and arrangement offthe several parts without departing from the spiri Scope of my invention; hence I do .not wish to limit myself to the particular embodiment hereinf'shown I and described, but f l/Vhat I claim is:. 1. In a tension device,a bracket, ,a' substantially U-shaped grid forming a skeleton yarn support projecting laterally from said bracket and adjustable" longitudinally therein, and a gravity operated disc arranged to coact with said yarn support, the yarn support being removable and the outer end thereof being inclined downwardly.

2 In a tension device,'a bracket, a gravity operated disc, a yarn support projecting laterally from thebracket and adj'us table longitudinally therein and arranged to coact with said disc, said yarn support cemprising a'substantially U"-shape"d grid, the outer end of which is unsupported and inclined downwardly and "the" branches of which. span the space beneath the disc.

In testimony, that I claim theforegoing as myinvention, I have signed my name this 3rd day of June, 1921. p I p Jorn QMeKEAnQ 

